What is the difference between the red and green lights on the Audi A6L AC button?

2 Answers
MacJude
07/29/25 7:46am
Red light indicates normal mode, while green light represents energy-saving mode. The functions of the center console buttons are as follows: 1. Drive-select (Driving Mode Selection): Offers four preset modes—Eco, Comfort, Auto, and Dynamic—along with the option for personalized driving mode settings. 2. Electronic Stability Program (ESP): Enabled by default, it is generally not recommended to manually turn it off. This system effectively prevents loss of vehicle control during extreme driving conditions. 3. Hazard Warning Lights (commonly known as double flashers): Should be activated in emergencies to alert other vehicles and prevent rear-end collisions. 4. Volume Control Buttons: In addition to the standard knob for volume adjustment, tilting left or right allows for track switching.
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LeJulianna
08/12/25 11:02am
When driving an Audi A6L, I noticed that the AC button has a significant impact on the auto start-stop behavior at traffic lights. If the AC is turned off, the engine is more likely to shut down automatically at red lights, which saves fuel and reduces emissions, but it can get a bit stuffy in hot summer weather. With the AC on, the system often keeps the engine running or only briefly stops to prevent the cabin temperature from rising, ensuring comfort. This isn’t necessarily a bad thing, especially in traffic jams where frequent start-stop noises can be annoying. The key is understanding that the system is designed to balance comfort and environmental concerns. My suggestion is to adjust based on your needs: turn off the AC and enable start-stop for fuel savings, or keep the AC on for comfort and let the system adapt accordingly.
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